public static Task While(
	Func<bool> condition,
	Func<Task> body
)

Public Shared Function While ( 
	condition As Func(Of Boolean),
	body As Func(Of Task)
) As Task

public:
static Task^ While(
	Func<bool>^ condition, 
	Func<Task^>^ body
)

static member While : 
        condition : Func<bool> * 
        body : Func<Task> -> Task 

while (condition())
{
    await body().ConfigureAwait(false);
}

public Task While()
{
    Stack<int> workList = new Stack<int>(new[] { 3, 5, 7 });
    return TaskBlocks.While(
        () => workList.Count > 0,
        () => ProcessWorkItemAsync(workList.Pop()));
}

private Task ProcessWorkItemAsync(int item)
{
    // this would typically perform an asynchronous operation on the
    // work item
    return CompletedTask.Default;
}

public async Task WhileAsyncAwait()
{
    Stack<int> workList = new Stack<int>(new[] { 3, 5, 7 });
    while (workList.Count > 0)
    {
        await ProcessWorkItemAsyncAwait(workList.Pop());
    }
}

private async Task ProcessWorkItemAsyncAwait(int item)
{
    // this would typically perform an asynchronous operation on the
    // work item
}